title: [A case report of successful emergency re-AVR for structural failure of a Hall-Kaster prosthesis].
abstract: A rare case of Hall-Kaster prosthetic valve dysfunction was reported. The patient was admitted with acute cardiac failure. She had previously received aortic valve replacement (AVR) using 23A Hall-Kaster prosthesis. Prosthetic valve dysfunction was diagnosed by both cinefluoroscopy and echocardiography. Emergent re-AVR was carried out and dislodgement of the pivot was revealed. Postoperative course was uneventful. Reports of structural failure of the Hall-Kaster (Medtronic-Hall) prosthesis are extremely rare. To our knowledge, this is the first reported case of dislodgement of the disc from the pivot of the Hall-Kaster prosthesis.
authors.affiliation: Department of Surgery (Section 2), Sapporo Medical College, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Yamamoto
authors.forename: T
authors.initials: T
authors.lastname: Kazui
authors.forename: Y
authors.initials: Y
authors.lastname: Okawa
authors.forename: A
authors.initials: A
authors.lastname: Watanabe
authors.forename: O
authors.initials: O
authors.lastname: Yamada
authors.forename: S
authors.initials: S
authors.lastname: Komatsu
mesh_terms: D000208:Acute Disease; D001021:Aortic Valve / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D004630:Emergencies; D005260:Female; D006333:Heart Failure / Q000209:etiology / Q000601:surgery*; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000601:surgery; D011475:Prosthesis Failure; D012086:Reoperation